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eth_sendUserOperation

This method is used to send a user operation to the bundler for inclusion.

Parameters​

  1. userOperation: A JSON object representing the user operation to send.

  2. entryPoint: The entry point to use for the user operation.

note

As specified in the 4337 specification, user operations must satisfy the following:

  • factory and factoryData are either both present or both absent.
  • Either the sender is an existing contract, or the the factory fields are not empty.
  • paymaster, paymasterData, paymasterVerificationGasLimit, and paymasterPostOpGasLimit are either all present or all absent.

Returns​

A string representing the hash of the user operation, or an error.

Example Request​

{
    "jsonrpc":"2.0",
    "id":1,
    "method":"eth_sendUserOperation",
    "params":[
        {
            "sender":"0x1234567890123456789012345678901234567890",
            "nonce":"0x1",
            "factory":"0x1234567890123456789012345678901234567890",
            "factoryData":"0x123456",
            "callData":"0x123456",
            "callGasLimit":"0x123456",
            "verificationGasLimit":"0x123456",
            "preVerificationGas":"0x123456",
            "maxFeePerGas":"0x123456",
            "maxPriorityFeePerGas":"0x123456",
            "paymaster":"0x1234567890123456789012345678901234567890",
            "paymasterVerificationGasLimit":"0x123456",
            "paymasterPostOpGasLimit":"0x123456",
            "paymasterData":"0x123456",
            "signature":"0x123456"
        },
        "0x0000000071727De22E5E9d8BAf0edAc6f37da032"
    ]
}

Example Response​

{
    "jsonrpc":"2.0",
    "id":1,
    "result":"0x1234567890123456789012345678901234567890123456789012345678901234"
}

Example Error​

{
    "jsonrpc":"2.0",
    "id":1,
    "error":{
        "code":-32000,
        "message":"AA20 Account Not Deployed"
    }
}